What is to force so much wind into a pipe that it produces an overtone, or a note higher than the natural note; thus, the upper octaves of a flute are produced by overblowing called?

overblow — (Mus.) To force so much wind into a pipe that it produces an overtone, or a note higher than the natural note; thus, the upper octaves of a flute are produced by overblowing. (Webster's 1913.)

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